Abstract: A metering device for discharging bulk material at a discharge opening, with a hopper for storing the bulk material, and a conveying device for conveying the bulk material from the hopper to the discharge opening, wherein the hopper has an outlet opening through which the bulk material can be conveyed out of the hopper by means of the conveying device, and a slide gate, the position of which determines an outlet cross-section of the outlet opening, wherein the metering device has a motor-operated actuator for adjusting the outlet cross-section, a control device for controlling the metering device and a motor-operated actuator for adjusting the slide gate, which is controlled via the control device as a function of a target feed rate.

Abstract: A processing apparatus for controlling, measuring and/or regulating, comprising an appliance for installation for output and/or input, with an intermediate housing, a unit for display and/or operation, and a main board connected to the unit having a central computer unit, wherein the appliance for installation is provided for use in a device or for a device such as a weighing device, metering device, conveying device, screening device, grinding device, mixing device, filter device, status monitoring device and/or material analysis device, wherein the main board serves as an electronic platform regardless of use and has, for each use, a particular combination of interfaces to the device in question. Furthermore, the invention relates to a processing apparatus for controlling, measuring and/or regulating having such an appliance for installation.

Abstract: A method for the gravimetric mass metering of bulk solids via a container with the bulk solid to be metered and a volumetric conveying device, via which the bulk solid coming from the container with a mass flow, which chronologically follows a target value for a target feed rate, is conveyed, and a differential metering scale suitable for such purpose. The bulk solid, after leaving the conveying device can pass through a mass flow measuring device and the mass flow measuring device calculates a second signal representing the mass flow, and based on the second signal representing the mass flow and the first control signal, a second control device calculates a second signal and delivers the signal to a drive of the conveying device for controlling the conveying device.

Abstract: A method for the gravimetric mass metering of bulk solids via a container with the bulk solid to be metered and a volumetric conveying device, via which the bulk solid coming from the container with a mass flow, which chronologically follows a target value for a target feed rate, is conveyed, and a differential metering scale suitable for such purpose. The bulk solid, after leaving the conveying device can pass through a mass flow measuring device and the mass flow measuring device calculates a second signal representing the mass flow, and based on the second signal representing the mass flow and the first control signal, a second control device calculates a second signal and delivers the signal to a drive of the conveying device for controlling the conveying device.

Abstract: An antenna arrangement for coupling high frequency electromagnetic waves into or out of a pipe-shaped hollow body includes two patch antenna elements that are located opposite one another and integrated in the pipe inner wall (5) of the hollow body (1), and have curved surfaces fitted to the curved longitudinal pipe inner wall of the hollow body (1). An apparatus for mass flow measurement includes at least two of such antenna arrangements axially spaced apart from one another in a conveyor pipe section.

Abstract: The invention relates to an antenna arrangement for in-coupling or out-coupling of electromagnetic high frequency waves, especially microwaves, in a pipe-shaped hollow body (1). This antenna arrangement comprises at least one flat patch element (2, 3) as a radiator element, which is applied on a dielectric substrate (8) within a pipe outer wall part (7) of the hollow body (1). The antenna arrangement is characterized in that the radiator element is integrated in the pipe inner wall (5) of the hollow body (1) and is fitted by curved surfaces to the curved longitudinal wall of the hollow body (1). In that regard, the patch element (2, 3) is embodied rectangularly, and is arranged with its longitudinal side (14) transversely to the hollow body longitudinal direction, whereby still at least one further similar second patch element (3) is integrated into the pipe inner wall (5), lying opposite to the in-feeding first patch element (2).

Abstract: The precision of a closed loop control system, for example of a loss-in-weight feeder, having a controlled operating section and a closed loop controlling section, is improved by adjusting the closed loop controlling section with regard to at least two stochastic precision disturbing signals. One such signal may represent disturbances that affect a sensor for ascertaining the actual weight of the scale. The other value may represent estimated bulk material density variations or disturbances. A model generator (7) provides spectra representing these disturbing values. A noise parameter estimator (17) selects those spectra most closely resembling the spectra of the disturbing values for producing an adjusting signal that is used to adapt the closed loop controlling section (5) to an optimal control. The closed loop controlling section (5) has connected thereto an evaluating circuit (14) including the model generator (7) for performing the correction or adjustment.